Pycom WiPy 2.0 Development Workshop by Agus Kurniawan & Agus Kurniawan

Author:Agus Kurniawan & Agus Kurniawan [Kurniawan, Agus]
Language: eng
Format: azw3
Publisher: PE Press
Published: 2017-06-22T04:00:00+00:00

4.3.1 Wiring

To understand Potentiometer, you see its scheme in Figure below.

You can connect VCC to Pycom WiPy 2.0 board on VCC +3.3V. Vout to WiPy 2.0 board Analog input P20 (G2 pin on expansion board). In addition, GND to WiPy 2.0 board GND. The following is hardware implementation. I use slide potentiometer.

4.3.2 Writing Program

Firstly, create a file, called adcdemo.py. To read analog input, we can use adc.read() function. Ok, Let's write these scripts.

import machine import time def run(): print('ADC demo') adc = machine.ADC() # G7 on expansion board (P20 on board) pot_analog = adc.channel(pin='P20') while 1: val = pot_analog() print('ADC: ' + str(val)) time.sleep(2)

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